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Re: [Qemu-devel] [Bug 902148] Re: qemu-img V1.0 hangs on creating Image
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [Bug 902148] Re: qemu-img V1.0 hangs on creating Image (0.15.1 runs) |
Date: |
Mon, 19 Dec 2011 13:22:50 +0000 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, Dec 19, 2011 at 10:52:24AM -0000, Michael Niehren wrote:
> Ok, sorry, here the output:
>
> Thread 1 (Thread 0x7f57507c2740 (LWP 27263)):
> #0 0x00007f57507da952 in qemu_aio_wait ()
> #1 0x00007f57507dcf2d in bdrv_rw_co ()
> #2 0x00007f57507dd2c2 in bdrv_pread ()
> #3 0x00007f57507ed03a in qcow2_open ()
> #4 0x00007f57507dc281 in bdrv_open_common ()
> #5 0x00007f57507ddb73 in bdrv_open ()
> #6 0x00007f57507ecafa in qcow2_create2 ()
> #7 0x00007f57507ece58 in qcow2_create ()
> #8 0x00007f57507e12c1 in bdrv_img_create ()
> #9 0x00007f575080bfeb in img_create ()
> #10 0x00007f574f340c7d in __libc_start_main () from /lib64/libc.so.6
> #11 0x00007f57507d9359 in _start ()
>
> I compiled the rpm's myself, so i am sure the only difference of both is the
> enable-debug Flag, same
> source code. Here are my compile-flags on running configure:
>
> --disable-curses --disable-curl --audio-card-list=ac97 \
> --enable-kvm --enable-spice --enable-linux-aio \
> --enable-tcg-interpreter --enable-vnc-thread
I cannot reproduce it here but is it possible for you to try this patch?
diff --git a/block.c b/block.c
index d015887..aae71c2 100644
--- a/block.c
+++ b/block.c
@@ -1042,6 +1042,8 @@ static void coroutine_fn bdrv_rw_co_entry(void *opaque)
{
RwCo *rwco = opaque;
+ printf("bdrv_rw_co_entry is_write %d sector_num %" PRId64 " nb_sectors %d
=",
+ rwco->is_write, rwco->sector_num, rwco->nb_sectors);
if (!rwco->is_write) {
rwco->ret = bdrv_co_do_readv(rwco->bs, rwco->sector_num,
rwco->nb_sectors, rwco->qiov);
@@ -1049,6 +1051,8 @@ static void coroutine_fn bdrv_rw_co_entry(void *opaque)
rwco->ret = bdrv_co_do_writev(rwco->bs, rwco->sector_num,
rwco->nb_sectors, rwco->qiov);
}
+ assert(rwco->ret != NOT_DONE);
+ printf("%d\n", rwco->ret);
}
/*
@@ -1081,6 +1085,7 @@ static int bdrv_rw_co(BlockDriverState *bs, int64_t
sector_num, uint8_t *
co = qemu_coroutine_create(bdrv_rw_co_entry);
qemu_coroutine_enter(co, &rwco);
while (rwco.ret == NOT_DONE) {
+ printf("waiting for rwco.ret != NOT_DONE\n");
qemu_aio_wait();
}
}
Here is my sample output from a successful run of ./qemu-img create -f qcow2
test.img 10G:
Formatting 'test.img', fmt=qcow2 size=10737418240 encryption=off
cluster_size=65536
bdrv_rw_co_entry is_write 0 sector_num 0 nb_sectors 1 =waiting for rwco.ret !=
NOT_DONE
waiting for rwco.ret != NOT_DONE
0
bdrv_rw_co_entry is_write 1 sector_num 0 nb_sectors 1 =waiting for rwco.ret !=
NOT_DONE
waiting for rwco.ret != NOT_DONE
0
bdrv_rw_co_entry is_write 1 sector_num 128 nb_sectors 128 =waiting for rwco.ret
!= NOT_DONE
0
bdrv_rw_co_entry is_write 0 sector_num 0 nb_sectors 1 =waiting for rwco.ret !=
NOT_DONE
0
bdrv_rw_co_entry is_write 0 sector_num 128 nb_sectors 128 =waiting for rwco.ret
!= NOT_DONE
0
bdrv_rw_co_entry is_write 0 sector_num 0 nb_sectors 1 =waiting for rwco.ret !=
NOT_DONE
0
bdrv_rw_co_entry is_write 1 sector_num 256 nb_sectors 128 =waiting for rwco.ret
!= NOT_DONE
0
bdrv_rw_co_entry is_write 0 sector_num 128 nb_sectors 1 =waiting for rwco.ret
!= NOT_DONE
0
bdrv_rw_co_entry is_write 1 sector_num 128 nb_sectors 1 =waiting for rwco.ret
!= NOT_DONE
0
bdrv_rw_co_entry is_write 1 sector_num 256 nb_sectors 128 =waiting for rwco.ret
!= NOT_DONE
waiting for rwco.ret != NOT_DONE
0
bdrv_rw_co_entry is_write 0 sector_num 384 nb_sectors 1 =waiting for rwco.ret
!= NOT_DONE
0
bdrv_rw_co_entry is_write 1 sector_num 384 nb_sectors 1 =waiting for rwco.ret
!= NOT_DONE
0
bdrv_rw_co_entry is_write 0 sector_num 0 nb_sectors 1 =waiting for rwco.ret !=
NOT_DONE
0
bdrv_rw_co_entry is_write 1 sector_num 0 nb_sectors 1 =waiting for rwco.ret !=
NOT_DONE
0
bdrv_rw_co_entry is_write 0 sector_num 0 nb_sectors 1 =waiting for rwco.ret !=
NOT_DONE
0
bdrv_rw_co_entry is_write 1 sector_num 0 nb_sectors 1 =waiting for rwco.ret !=
NOT_DONE
0
s
- [Qemu-devel] [PATCH v2 0/9] various ARM fixes, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH v2 4/9] arm: add dummy gic security registers, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH v2 2/9] arm: Set frequencies for arm_timer, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH 5/9] ahci: convert ahci_reset to use AHCIState, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH v2 1/9] arm: add missing scu registers, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH 9/9] arm: increase a9mp interrupts to 160, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH v2 3/9] arm: add dummy v7 cp15 config_base_register, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH v2 8/9] Add xgmac ethernet model, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH 6/9] ahci: add support for non-PCI based controllers, Mark Langsdorf, 2011/12/22
- [Qemu-devel] [PATCH v2 7/9] add L2x0/PL310 cache controller device, Mark Langsdorf, 2011/12/22